John - Thanks very much. I think a 9-speed chain is about 0.5 mm narrower than an 8-speed chain. That might be just enough to solve the problem.
On Friday, May 8, 2020 at 8:53:34 PM UTC-4, John Casteen wrote: > > Jason, > > I can't add anything directly to the good replies already, but here's > another data point. I've got the same frame, crank, and derailer you're > working on, but with a 9-speed cassette and chain. On the small cog and > big chainring, the trailing face of the derailer is within .5mm of the > crank arm. It looks like I tweaked it inboard, just slightly out of > parallel with the chainring, in order to maintain that clearance. Sounds > as though others have found the setup similarly tight. > > John > > On Thursday, May 7, 2020 at 7:40:38 PM UTC-4, dirtp wrote: >> >> Hi everyone, I recently finished building a Joe Appaloosa that I bought a >> while back, but I didn't have time to complete it until now. This forum >> helped me pick out the rims, in fact! >> >> I totally love the bike, but I'm having a problem I was hoping someone >> could help me with. I built the bike with an 8-speed cassette, Shimano >> Claris 3x8 front derailleur, and Silver triple cranks. However, when I have >> the chain on the biggest chainring and the smallest cog, the front >> derailleur is less than 1mm from the crank arm. When I pedal moderately >> hard in this gear, the chain rubs on the outside of the front derailleur. >> >> Has anyone else had this problem? Is it maybe because the 8-speed chain >> is wider than a 9-speed chain? >> >> I have another 8-speed bike with a Silver triple crankset and a Deore FD >> and never noticed until now, but it has a similar problem with a super >> tight clearance between the crank arm and front derailleur. >> >> Thanks very much for any help you can provide! >> >> Jason >> > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/2b59c035-d69d-4415-b699-fb97530d27b3%40googlegroups.com.
